![Page 1: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/1.jpg)
Lidar at ODOT
Rhonda Dodge, LSIT
Oregon Department of Transportation
Engineering Automation Section
Geometronics Unit
Symposium by the Sea
September 27, 2019
1
![Page 2: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/2.jpg)
LiDAR at ODOT
Leica Pegasus: Two
2
![Page 3: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/3.jpg)
ODOT’s Mobile Lidar Program
3
![Page 4: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/4.jpg)
ODOT’s Mobile Lidar Program
4
![Page 5: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/5.jpg)
Mobile Lidar Data - Intensity
5
![Page 6: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/6.jpg)
Mobile Lidar Data - RGB
6
![Page 7: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/7.jpg)
Mobile Lidar Data Density
7
![Page 8: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/8.jpg)
Lidar Data Storage
❑ Recently upgraded to a Petabyte sized data server
❑ 1 PB = 1024 TB = 1 million GB
❑ Daily backup scanning
❑Monthly full backups at remote location
8
![Page 9: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/9.jpg)
Lidar File Management
❑ File structure
❑ Raw Data
❑ Processed Data
❑ Manipulated
❑ Data Handling
❑ Copy files to local storage
❑ Manipulate
❑ Copy manipulated data to server9
![Page 10: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/10.jpg)
4 Unexpected Uses of Lidar
1) Speed Zone Changes
2) Vertical Clearance
3) Crash Scene Reconstruction
4) Reflective Marking Extraction
10
![Page 11: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/11.jpg)
Ex. 1 – Changing Highway Speed Zones
11
❑HB 3402
❑ 2015 legislative action
❑ Raised speed limit on the main Eastern Oregon highways
❑ Speeds on these highways are Speed Limits as of March 1, 2016
![Page 12: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/12.jpg)
Highways Affected
12
![Page 13: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/13.jpg)
Implementation – No-Pass Zones❑ Higher speed = longer distance to pass
❑ Longer distance to pass = longer sight distance❑ 5 mph = 100 feet additional passing lane distance
Speed Limit
Min. Passing
Sight Distance
55 mph 900 ft.
65 mph 1100 ft.
70 mph 1200 ft.
13
![Page 14: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/14.jpg)
No-Pass Evaluation – Std. Method
Source: SlideShare.net 14
![Page 15: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/15.jpg)
Run Sight Distance Check
15Source: A Policy of Geometric Design of Highways and Streets
![Page 16: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/16.jpg)
Data Source for Project
16
❑ Mobile lidar data was previously acquired in Region-wide collections
❑ Region 4 - 2013
❑ Region 5 - 2014
![Page 17: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/17.jpg)
Map Centerline and Edge of Pavement
17
![Page 18: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/18.jpg)
Create 3-D Model for Sight Distance Check
Completed 3-D Model
VerticalElement
18
![Page 19: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/19.jpg)
Attach Vertical Profile for Drive Eye Height
3.5
ft.
Driver Eye Height
19
![Page 20: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/20.jpg)
Automated Pass/No Pass Analysis
Great! Where is this?
20
![Page 21: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/21.jpg)
21
![Page 22: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/22.jpg)
22
![Page 23: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/23.jpg)
23
![Page 24: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/24.jpg)
24
![Page 25: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/25.jpg)
Region 4 Cost Savings
❑ Using new technology: total cost = $150,000
❑ Traditional method: estimated cost = $407,000
❑ Savings $257,000
25
![Page 26: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/26.jpg)
26
26
Ex. 2 – Vertical Clearance
Goal: To establish current, accurate, and reliable Vertical Clearance data for structures above Oregon highways
![Page 27: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/27.jpg)
Why?
27
![Page 28: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/28.jpg)
Old Measuring Method
28
![Page 29: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/29.jpg)
Normal Distance
29
![Page 30: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/30.jpg)
Vertical Clearance - Background
ODOT’s Vertical Clearance Measurement System (VCMS)
30
![Page 31: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/31.jpg)
VCMS - Problems
31
![Page 32: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/32.jpg)
Lidar Point Cloud Measurements
32
![Page 33: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/33.jpg)
Lidar Point Cloud Measurements
33
![Page 34: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/34.jpg)
Ex. 3 – Scene Reconstruction
A Partnership with
Oregon State Police
34
![Page 35: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/35.jpg)
Collision Reconstruction - Evidence
35Source: Oregon State Police
![Page 36: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/36.jpg)
Problem: Highway Closure
❑ Mapping existing roadway features
❑ Mapping/collecting evidence of collision and/or crime
❑ Take photos of the scene
❑ Interviewing witnesses
❑ Collecting any other evidence
36
![Page 37: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/37.jpg)
Solution: Existing Lidar
37
![Page 38: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/38.jpg)
Ex. 4 – Pavement Marking
Lidar For Maintenance Of Pavement Reflective MarkingsAnd Retro-reflective Signs
Research performed by
Oregon State University
38
![Page 39: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/39.jpg)
Project Objectives❑ Motivation
❑ Save time/money by generating retro-reflectivity data from mobile scans
❑ Goals
❑ Develop model to relate intensity and retro-reflectivity values for ODOT’s mobile lidar system
❑ Evaluate findings on pavement markings and reflective signs
❑ Create GIS data layers from the output to support decision making Image Courtesy of Oregon State University
39
![Page 40: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/40.jpg)
Retro-reflectivity
When light is reflected back in the direction of the illumination source (i.e. headlights)
Source: Oregon State University
40
![Page 41: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/41.jpg)
Sign Test Goals
❑Investigate mobile lidar for sign assessment and maintenance
❑Goals
❑ Evaluate ability to measure sign retro-reflectivity
❑ Evaluate ability to measure sign geometry and condition metrics
• Location and height
• Orientation
• Damage
• Contrast ratio
• Support type
❑Challenges
❑ Saturation and range walkImage Courtesy of Oregon State University
41
![Page 42: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/42.jpg)
Sign Test
❑Tested on
❑ Failing signs and damaged signs
❑ Multiple passes from different lanes
Images Courtesy of Oregon State University
42
![Page 43: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/43.jpg)
Lane Trials
Images Courtesy of Oregon State University43
![Page 44: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/44.jpg)
Different Scanners
44Images Courtesy of Oregon State University
![Page 45: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/45.jpg)
Issues
Images Courtesy of Oregon State University
45
![Page 46: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/46.jpg)
Sign Test – Conclusion
❑ ODOT’s System NOT successful
❑ Led to positional and geometric inaccuracies
❑ Other systems have been reported to be successful
46
![Page 47: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/47.jpg)
Reflective Markings❑ Goals:
• Investigate optimal acquisition parameters (e.g., left vs. right lane) for longitudinal stripe
• Validate radiometric calibration model
• Test stripe-extraction methods
47Images Courtesy of Oregon State University
![Page 48: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/48.jpg)
Retro-reflectometer
48Image Courtesy of LTL-X Mark II User manual
![Page 49: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/49.jpg)
Regression Analysis
❑ Finding a correlation between intensity and retroreflectivity
Model
Sampling tech.
Nearest Neighbor 0.7002 0.6963 0.6361 0.6982 0.6930 0.7128
Active Window Mean 0.7798 0.7815 0.6899 0.7817 0.7597 0.7795
Active Window IDW^1 0.7670 0.7682 0.6802 0.7684 0.7500 0.7708
Active Window IDW^2 0.7479 0.7474 0.6680 0.7478 0.7340 0.7553
Active Window 05% 0.8357 0.8273 0.7980 0.8348 0.8006 0.8191
Active Window 10% 0.8360 0.8306 0.7870 0.8352 0.8009 0.8190
Active Window 15% 0.8277 0.8248 0.7694 0.8273 0.7933 0.8147
Active Window 20% 0.8186 0.8173 0.7526 0.8187 0.7870 0.8094
Active Window 30% 0.8043 0.8041 0.7275 0.8048 0.7777 0.8006
Active Window 40% 0.7779 0.7786 0.6940 0.7788 0.7555 0.7779
Active Window Median 0.7436 0.7438 0.6543 0.7439 0.7283 0.7484
Passive Window Mean 0.5913 0.5856 0.5422 0.5905 0.5536 0.5764
Passive Window IDW^1 0.7552 0.7537 0.6771 0.7556 0.7296 0.7516
Passive Window IDW^2 0.7527 0.7525 0.6714 0.7530 0.7351 0.7571
Passive Window 05% 0.5412 0.5388 0.5242 0.5411 0.5349 0.5583
Passive Window 10% 0.5598 0.5591 0.5333 0.5600 0.5549 0.5819
Passive Window 15% 0.5677 0.5675 0.5353 0.5680 0.5624 0.5919
Passive Window 20% 0.5797 0.5787 0.5457 0.5798 0.5701 0.5988
Passive Window 30% 0.5839 0.5825 0.5387 0.5836 0.5662 0.5882
Passive Window 40% 0.5674 0.5664 0.5105 0.5670 0.5324 0.5490
Passive Window Median 0.5219 0.5200 0.4593 0.5207 0.4691 0.4832
Correlation Coefficients (𝑅2)
Model
Sampling tech.
Nearest Neighbor 0.0249 0.0265 0.0269 0.0316 0.0367 0.0355
Active Window Mean 0.0213 0.0226 0.0248 0.0269 0.0324 0.0311
Active Window IDW^1 0.0219 0.0232 0.0252 0.0277 0.0331 0.0317
Active Window IDW^2 0.0228 0.0242 0.0257 0.0289 0.0342 0.0328
Active Window 05% 0.0189 0.0203 0.0209 0.0241 0.0304 0.0287
Active Window 10% 0.0188 0.0200 0.0213 0.0239 0.0302 0.0286
Active Window 15% 0.0192 0.0203 0.0221 0.0244 0.0306 0.0289
Active Window 20% 0.0196 0.0207 0.0227 0.0249 0.0310 0.0292
Active Window 30% 0.0202 0.0214 0.0236 0.0257 0.0315 0.0297
Active Window 40% 0.0214 0.0227 0.0248 0.0272 0.0328 0.0313
Active Window Median 0.0229 0.0244 0.0261 0.0290 0.0344 0.0332
Passive Window Mean 0.0294 0.0314 0.0300 0.0366 0.0440 0.0448
Passive Window IDW^1 0.0224 0.0240 0.0252 0.0284 0.0344 0.0332
Passive Window IDW^2 0.0226 0.0240 0.0255 0.0286 0.0341 0.0327
Passive Window 05% 0.0330 0.0336 0.0333 0.0408 0.0472 0.0476
Passive Window 10% 0.0319 0.0327 0.0325 0.0396 0.0456 0.0456
Passive Window 15% 0.0313 0.0322 0.0320 0.0389 0.0449 0.0446
Passive Window 20% 0.0305 0.0317 0.0312 0.0380 0.0441 0.0438
Passive Window 30% 0.0298 0.0313 0.0307 0.0373 0.0436 0.0437
Passive Window 40% 0.0300 0.0317 0.0310 0.0374 0.0448 0.0457
Passive Window Median 0.0312 0.0333 0.0320 0.0389 0.0472 0.0492
Variance of intensity values
Charts Courtesy of Oregon State University 49
![Page 50: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/50.jpg)
Regression Analysis
0
100
200
300
400
500
600
0.0 0.2 0.4 0.6 0.8 1.0
Ret
rore
flec
tiv
ity
(m
cd/m
2/l
ux
)
Uncorrected Intensity
𝑅𝑒𝑡𝑟𝑜 = 373 28 𝐼𝑛𝑡 10%1 19261
Chart Courtesy of Oregon State University
50
![Page 51: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/51.jpg)
Longitudinal Stripe – Single Profiler
51
Chart Courtesy of Oregon State University
0
50
100
150
200
250
0 10 20 30 40 50 60 70 80
Ret
rore
flec
tivi
ty(m
cd/m
2 /lu
x)
Distance (m)
Retro LEFT RIGHT
Validation Test (Single Profiler)
![Page 52: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/52.jpg)
Longitudinal Stripe – Dual Profiler
52
Chart Courtesy of Oregon State University
0
50
100
150
200
250
0 10 20 30 40 50 60 70 80
Ret
rore
flec
tivi
ty(m
cd/m
2 /lu
x)
Distance (m)
Retro LEFT RIGHT
Validation Test (Dual Profiler)
![Page 53: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/53.jpg)
Dry vs. Wet
Images Courtesy of Oregon State University 53
![Page 54: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/54.jpg)
Road Marking Extractor (RoME)
54
![Page 55: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/55.jpg)
Road Marking Extractor (RoME)
55
![Page 56: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/56.jpg)
RoME Tool Evaluation
Sampled at tenths of a mile
Sampled at hundredths of a mile
56
![Page 57: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/57.jpg)
Road Marking Extractor (RoME)Run table
RunIDHWY
NumberDate
SectionIDStart
SectionIDEnd
StripeIDStart
StripeIDEnd
NodeStart
NodeEnd
SectionInterval
GridCellSize
AngleDiffDeg
StripeWidth
RoadWidth
SoftwareVersion
File Name
1 H1 20170725 1 2 1 6 1 12 10 0.05 10 0.1 7.2 1.0 T03
2 H1 20170725 3 4 7 62 13 124 10 0.05 10 0.1 7.2 1.0 T04
Section table
SectionID trajMidX trajMidY trajMidZ StripeIDStart StripeIDEnd RunID
1 72337.45 54102.86 136.31 1 3 1
2 72328.69 54107.6 136.24 4 6 1
3 71391.53 54705.3 136.17 7 33 2
4 71383.38 54711.04 136.05 34 62 2
Stripe table
StripeID SectionIDNodeStart
NodeEnd
Color Material LengthCondition
ScoreRetro
NumPtsRetroMin
RetroMax
RetroMedian
RetroAve
RetroStdDev
NumPtsPC
IntMin
IntMax
IntMedian
IntAve
IntStdDev
WidthStripeType
1 1 1 2 White N/A 10.00171 E 213 56.49419 135.1821 73.03991 82.58601 25.00726 808 0.054276 0.496376 0.191989 0.200423 0.067217 0.1 L
2 1 3 4 White N/A 3.445397 B 257 34.64113 360.7918 315.8434 281.3713 111.3855 1011 0.019287 1 0.431724 0.430364 0.266884 0.1 L
3 1 5 6 Yellow N/A 10.06449 A 387 276.9525 336.3742 302.2518 302.5339 16.52217 1460 0.075532 0.953338 0.600259 0.505834 0.219909 0.1 L
4 2 7 8 White N/A 10.02149 E 224 58.54683 151.4477 73.62221 94.44509 32.84942 791 0.050935 0.467628 0.176944 0.184757 0.068567 0.1 L
5 2 9 10 White N/A 3.38001 B 270 148.6238 372.9027 323.934 301.7919 73.75184 960 0.022248 1 0.299611 0.405832 0.270227 0.1 T
6 2 11 12 Yellow N/A 10.06285 A 408 288.475 355.7217 316.9342 317.4209 18.31632 1497 0.075776 0.914656 0.630152 0.525263 0.227636 0.1 T
Node table
NodeID X Y Z StripeID
1 72332.88 54098.91 146.8998 1
2 72342.88 54098.96 146.898 1
3 72336.82 54106.26 147.0378 2
4 72340.26 54106.3 147.0409 2
5 72332.85 54109.91 147.1491 3
6 72342.91 54109.97 147.1438 3
Retro table
RetroID X Y Z StripeIDNumPtsP
CRetro10
1 72332.98 54098.91 146.9025 1 11 65.3333
2 72333.48 54098.91 146.9038 1 15 71.72688
3 72333.98 54098.91 146.9076 1 14 78.88223
4 72334.48 54098.92 146.9101 1 14 84.08161
5 72334.98 54098.92 146.91 1 12 62.34572
6 72335.48 54098.92 146.9092 1 14 67.16561
7 72335.98 54098.92 146.9072 1 12 74.63528 57
![Page 58: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/58.jpg)
ArcGIS Tool
58
![Page 59: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/59.jpg)
ArcGIS Tool
59
![Page 60: Lidar at ODOT - ORURISA K. Dodge... · 2019. 10. 7. · Geometronics Unit Symposium by the Sea September 27, 2019 1. LiDAR at ODOT Leica Pegasus: Two 2. ... 4 Unexpected Uses of Lidar](https://reader035.vdocument.in/reader035/viewer/2022071017/5fd035c8a43c9c6738686fa9/html5/thumbnails/60.jpg)
Contact Information
Rhonda Dodge, LSIT
Remote Sensing Surveyor
ODOT Geometronics
(503) 986-3775
60